在当今时代,()和()构成了人的最突出的现实本质。
参考答案:创新意识;实践能力
He ______ sleep, although he tried to, when he got on such a hunt for an idea until he had caught it.
A.wouldn’t
B.shouldn’t
C.couldn’t
D.mustn’t
下列选项中与E-mail有关的协议是:()
A、SMTP
B、HTTP
C、FTP
D、UDP